學術資源整合系統-相關推薦

 
作者Arnold, A. Elizabeth;Harrington, Alison H.;Huang, Yu-Ling;U'Ren, Jana M.;Massimo, Nicholas C.;Knight-Connoni, Victoria;Inderbitzin, Patirk
出版日期202111
已接受202109
著作名稱Coniochaeta elegans sp. nov., C. montana sp. nov., and C. nivea sp. nov.: three new species of endophytes with distinctive morphology and functional traits
刊名International Journal of Systematic and Evolutionary Microbiology
71
11
被收錄索引SCI
主題真菌
摘要A growing interest in fungi that occur within symptom-less plants and lichens (endophytes) has uncovered previously unchar-
acterized species in diverse biomes worldwide. In many temperate and boreal forests, endophytic Coniochaeta (Sacc.) Cooke

(Coniochaetaceae, Coniochaetales, Sordariomycetes, Ascomycota) are commonly isolated on standard media, but rarely are char-
acterized. We examined 26 isolates of Coniochaeta housed at the Gilbertson Mycological Herbarium. The isolates were col-
lected from healthy photosynthetic tissues of conifers, angiosperms, mosses and lichens in Canada, Sweden and the United

States. Their barcode sequences (nuclear ribosomal internal transcribed spacer and 5.8S; ITS rDNA) were ≤97% similar to any

documented species available through GenBank. Phylogenetic analyses based on two loci (ITS rDNA and translation elonga-
tion factor 1-alpha) indicated that two isolates represented Coniochaeta cymbiformispora, broadening the ecological niche and

geographic range of a species known previously from burned soil in Japan. The remaining 24 endophytes represented three

previously undescribed species that we characterize here: Coniochaeta elegans sp. nov., Coniochaeta montana sp. nov. and Coni-
ochaeta nivea sp. nov. Each has a wide host range, including lichens, bryophytes and vascular plants. C. elegans sp. nov. and C.

nivea sp. nov. have wide geographic ranges. C. montana sp. nov. occurs in the Madrean biome of Arizona (USA), where it is sym-
patric with the other species described here. All three species display protease, chitinase and cellulase activity in vitro. Overall,

this study provides insight into the ecological and evolutionary diversity of Coniochaeta and suggests that these strains may be
amenable for studies of traits relevant to a horizontally transmitted, symbiotic lifestyle.
系統號NO000006113

Aug 20 2021 11:12:17
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